What Mothers of Dragon riders dying during childbirth can mean

I had a theory and wanted to hear everyone’s opinion. Lynna stark died giving birth to Jon. Rhaella Targaryen died giving birth to Dani. Dani is the only one that ended up riding dragons, that’s the reason her mother died giving birth to her and not her first two children.

1: During Dani’s vision (season 2 Episode 10), she meets Drogo in a tent carrying a baby waiting for her. This could be a prelude to show of her dying after the destruction of the iron throne since she crossed over. So my theory is, like her mother and all the other mothers that died during child birth, she too will die giving birth to her and Jon’s baby who shall be a dragon rider.

2: Tyrion Lannisters actually being a Targaryen since he was able to touch the dragon and his mother died giving birth to him.

3: Iron Throne would be destroyed in the end ( Nothing to do with dragon rider moms) but just thought I’d put it here since Danny and Bran both had visions about that.

Can this be possible? Am I reaching here? Are there any other mentions of the dragon riders mothers in the book?

Aegon I was the most famous dragonlord (before Daenerys, ofc) and had a younger sister, Rhaenys, so I'm gonna assume the thing where the mothers of dragonlords/dragonriders is probably moot.

Lyanna Stark had Jon during Robert's Rebellion. She was also in hiding since the beginning of the war itself. I would guess that her bleeding out during childbirth is a result of stress and/or poor nutrition or something. Same for Queen Rhaella; she gave birth to Daenerys during the worst storm ever. Childbirth is a traumatic enough of an experience, and I'm sure the stress of being on the run and being in the middle of a storm...

I think Tyrion is actually a Lannister. The other two dragonriders are the Night King and Jon. People might argue that Tyrion had always fancied himself a secret Targaryen bastard and having a dragon of his own, but Cersei was the same. Daenerys' words aren't wrong when she says that dragons were terrifying and extraordinary. Regardless of what Aerys II brought to Westeros, the legacy of Aegon I is a story many children grew up hearing, and many of them probably dreamed of the same thing.

Dany - dragon rider of Drogon, named for her husband, created with baby conceived with her husband.

Jon - likely dragon rider of Rhaegal, named after his father. A man who hated killing - just like Jon.

Night King - Dragon Rider of Viserion, named after the worst POS east of King’s Landing. Believed he was entitled to the throne, Cared nothing for anyone but himself.

Unknown - Should Dany perish, would another ride Drogon or Rhaegal? The only way I see Tyrion being a dragon rider is in a dire situation, such as the NK attacking KL - and Drogon and Dany are dead or MIA.

Second Unknown - Bran. Could he warg into Viserion? It seems he is powerful enough now. We also have to remember the 1st 3ERs prediction about Bran flying. Yes, we saw Bran control birds last season. However, that bird scene wasn’t given enough weight to merit such an ominous prediction. Therefore, when will Bran fly? His mother died as well, though as we all know, it wasn’t in childbirth. (A bloody, pregnant, dead family member - and dead baby- was present though.)